/**
 * 以特殊高亮的形式直观展示数据分布状况。
 * 注：chrome、safari、IE9及以上浏览器，核心的代码主要来自于第三方heatmap.js。@author juyang
 */
T.HeatmapOverlay = T.Overlay.extend({

  /**
   *构造
   * @param options
   */
  initialize: function (options) {
    this.conf = options;
    this.heatmap = null;
    this.latlngs = [];
    this.bounds = null;
  },

  onAdd: function (map) {

    this._map = map;
    var el = document.createElement("div");
    el.style.position = "absolute";
    el.style.top = 0;
    el.style.left = 0;
    el.style.border = 0;
    el.style.width = this._map.getSize().x + "px";
    el.style.height = this._map.getSize().y + "px";

    this.conf.container = el;
    if (!this.isSupportCanvas()) {//判断是否支持Canvas.
      return el;
    }
    this.conf.valueField = this.conf.valueField || "count";
    this.conf.latField = this.conf.latField || 'lat';
    this.conf.lngField = this.conf.lngField || 'lng';
    this.heatmap = h337.create(this.conf);
    this.heatmap._renderer.setDimensions(this._map.getSize().x, this._map.getSize().y);
    map.getPanes().overlayPane.appendChild(el);
    map.on('moveend', this._reset, this);
    this._div = el;


  },

  onRemove: function (map) {
    map.getPanes().overlayPane.removeChild(this._div);
    map.off('moveend', this._reset, this);
  },
  _reset: function () {
    var size = this._map.getSize();
    this._div.style.width = size.x + "px";
    this._div.style.height = size.y + "px";
    this.heatmap._renderer.setDimensions(size.x, size.y);
    this.draw();
  },
  getElement:function(){
    return  this.conf.container;
  },

  draw: function () {

    if (!this.isSupportCanvas()) {//判断是否支持Canvas.
      return;
    }
    //  if (this.isHidden())  return;
    var currentBounds = this._map.getBounds();
    if (!this.isadd && currentBounds.equals(this.bounds)) {
      this.isadd = false;
      return;
    }
    this.bounds = currentBounds;

    var ne = this._map.lngLatToLayerPoint(currentBounds.getNorthEast()),
      sw = this._map.lngLatToLayerPoint(currentBounds.getSouthWest()),
      topY = ne.y,
      leftX = sw.x,
      h = sw.y - ne.y,
      w = ne.x - sw.x;


    this.conf.container.style.width = w + 'px';
    this.conf.container.style.height = h + 'px';
    this.conf.container.style[this.CSS_TRANSFORM()] = 'translate(' + Math.round(leftX) + 'px,' + Math.round(topY) + 'px)';

    if (this.latlngs.length > 0) {
      this.heatmap.removeData();
    }
    var len = this.latlngs.length;
    d = {
      max: this.heatmap._store.getData().max,
      data: []
    };

    while (len--) {
      var latlng = this.latlngs[len].latlng;
      if (!currentBounds.contains(latlng)) {
        continue;
      }


      var roundedPoint = this._getContainerPoint(latlng);
      d.data.push({
        x: roundedPoint.x,
        y: roundedPoint.y,
        count: this.latlngs[len].c
      });


    }
    this.heatmap.setData(d);
  },

  CSS_TRANSFORM: function () {
    var div = document.createElement('div');
    var props = [
      'transform',
      'WebkitTransform',
      'MozTransform',
      'OTransform',
      'msTransform'
    ];

    for (var i = 0; i < props.length; i++) {
      var prop = props[i];
      if (div.style[prop] !== undefined) {
        return prop;
      }
    }
    return props[0];
  },
  /**
   * 设置热力图展现的详细数据, 实现之后,即可以立刻展现
   * {"<b>max</b>" : {Number} 权重的最大值,
   * <br />"<b>data</b>" : {Array} 坐标详细数据,格式如下 <br/>
   * {"lng":116.421969,"lat":39.913527,"count":3}, 其中<br/>
   * lng lat分别为经纬度, count权重值
   * @param data
   */
  setDataSet: function (data) {
    this.data = data;
    if (!this.isSupportCanvas()) {//判断是否支持Canvas.
      return;
    }
    var currentBounds = this._map.getBounds();
    var mapdata = {
      max: data.max,
      data: []
    };
    var d = data.data,
      dlen = d.length;


    this.latlngs = [];
    this.heatmap.removeData();


    while (dlen--) {
      var latlng = new T.LngLat(d[dlen][this.conf.lngField], d[dlen][this.conf.latField]);
      this.latlngs.push({
        latlng: latlng,
        c: d[dlen].count
      });

      if (!currentBounds.contains(latlng)) {
        continue;
      }

      var point = this._getContainerPoint(latlng);

      mapdata.data.push({
        x: point.x,
        y: point.y,
        count: d[dlen].count
      });
    }

    this.heatmap.setData(mapdata);
  },

  _getContainerPoint: function (latlng) {
    var currentBounds = this._map.getBounds();
    var divPixel = this._map.lngLatToLayerPoint(latlng),
      leftX = this._map.lngLatToLayerPoint(currentBounds.getSouthWest()).x,
      topY = this._map.lngLatToLayerPoint(currentBounds.getNorthEast()).y,
      screenPixel = new T.Point(divPixel.x - leftX, divPixel.y - topY);
    var point = this.pixelTransform(screenPixel);

    return point;
  },

  /**
   * 添加势力图的详细坐标点
   * @param {Number} lng 经度坐标
   * @param {Number} lat 经度坐标
   * @param {Number} count 经度坐标
   */
  addDataPoint: function (lng, lat, count) {
    if (!this.isSupportCanvas()) {
      return;
    }
    if (this.data && this.data.data) {
      this.data.data.push({
        lng: lng,
        lat: lat,
        count: count
      });
    }
    var latlng = new T.LngLat(lng, lat),
      point = this.pixelTransform(this._map.lngLatToContainerPoint(latlng));


    this.latlngs.push({
      latlng: latlng,
      c: count
    });


    // this.heatmap.addData({x: point.x, y: point.y, value: count });
    this.isadd = true;
    this.draw();

  }
  ,

  /**
   * 内部使用的坐标转化
   * @param p
   * @returns {*}
   */
  pixelTransform: function (p) {

    var h = this.heatmap._config.container.clientHeight,
      w = this.heatmap._config.container.clientWidth;
    if(w==0||h==0)return p;
    while (p.x < 0) {
      p.x += w;
    }

    while (p.x > w) {
      p.x -= w;
    }

    while (p.y < 0) {
      p.y += h;
    }

    while (p.y > h) {
      p.y -= h;
    }

    p.x = (p.x >> 0);
    p.y = (p.y >> 0);

    return p;
  }
  ,
  /**
   * 更改热力图的展现或者关闭
   */

  toggle: function () {
    if (!this.isSupportCanvas()) {//判断是否支持Canvas.
      return;
    }
    if (this.conf.visible === true) {
      this.conf.visible = false;
    } else {
      this.conf.visible = true;
    }
    ;
    if (this.conf.visible) {
      this.conf.container.style.display = "block";
    } else {
      this.conf.container.style.display = "none";
    }
    return this.conf.visible;
  },

  setOptions: function (options) {
    if (!this.isSupportCanvas()) {//判断是否支持Canvas.
      return;
    }

    for (var key in options) {
      if (key == "radius") {
        this.heatmap._store._cfgRadius = options[key];
      }
      if (key == 'opacity') {
        options[key] = options[key] / 100;
      }
    }
    this.heatmap.configure(options);
    if (this.data) {
      this.setDataSet(this.data);//重新渲染
    }
  }
  ,
  isSupportCanvas: function () {
    var elem = document.createElement('canvas');
    return !!(elem.getContext && elem.getContext('2d'));
  }

})
/*==============================以上部分为专为天地图打造的覆盖物===================================================*/
/*==============================以下部分为heatmap.js的核心代码,只负责热力图的展现====================================*/

/*
 * heatmap.js v2.0.2 | JavaScript Heatmap Library
 *
 * Copyright 2008-2016 Patrick Wied <heatmapjs@patrick-wied.at> - All rights reserved.
 * Dual licensed under MIT and Beerware license
 *
 * :: 2016-02-04 21:41
 */
;(function (name, context, factory) {

  // Supports UMD. AMD, CommonJS/Node.js and browser context
  if (typeof module !== "undefined" && module.exports) {
    module.exports = factory();
  } else if (typeof define === "function" && define.amd) {
    define(factory);
  } else {
    context[name] = factory();
  }

})("h337", this, function () {

// Heatmap Config stores default values and will be merged with instance config
  var HeatmapConfig = {
    defaultRadius: 40,
    defaultRenderer: 'canvas2d',
    defaultGradient: { 0.25: "rgb(0,0,255)", 0.55: "rgb(0,255,0)", 0.85: "yellow", 1.0: "rgb(255,0,0)"},
    defaultMaxOpacity: 1,
    defaultMinOpacity: 0,
    defaultBlur: .85,
    defaultXField: 'x',
    defaultYField: 'y',
    defaultValueField: 'value',
    plugins: {}
  };
  var Store = (function StoreClosure() {

    var Store = function Store(config) {
      this._coordinator = {};
      this._data = [];
      this._radi = [];
      this._min = 0;
      this._max = 1;
      this._xField = config['xField'] || config.defaultXField;
      this._yField = config['yField'] || config.defaultYField;
      this._valueField = config['valueField'] || config.defaultValueField;

      if (config["radius"]) {
        this._cfgRadius = config["radius"];
      }
    };

    var defaultRadius = HeatmapConfig.defaultRadius;

    Store.prototype = {
      // when forceRender = false -> called from setData, omits renderall event
      _organiseData: function(dataPoint, forceRender) {
        var x = dataPoint[this._xField];
        var y = dataPoint[this._yField];
        var radi = this._radi;
        var store = this._data;
        var max = this._max;
        var min = this._min;
        var value = dataPoint[this._valueField] || 1;
        var radius = dataPoint.radius || this._cfgRadius || defaultRadius;

        if (!store[x]) {
          store[x] = [];
          radi[x] = [];
        }

        if (!store[x][y]) {
          store[x][y] = value;
          radi[x][y] = radius;
        } else {
          store[x][y] += value;
        }

        if (store[x][y] > max) {
          if (!forceRender) {
            this._max = store[x][y];
          } else {
            this.setDataMax(store[x][y]);
          }
          return false;
        } else{
          return {
            x: x,
            y: y,
            value: value,
            radius: radius,
            min: min,
            max: max
          };
        }
      },
      _unOrganizeData: function() {
        var unorganizedData = [];
        var data = this._data;
        var radi = this._radi;

        for (var x in data) {
          for (var y in data[x]) {

            unorganizedData.push({
              x: x,
              y: y,
              radius: radi[x][y],
              value: data[x][y]
            });

          }
        }
        return {
          min: this._min,
          max: this._max,
          data: unorganizedData
        };
      },
      _onExtremaChange: function() {
        this._coordinator.emit('extremachange', {
          min: this._min,
          max: this._max
        });
      },
      addData: function() {
        if (arguments[0].length > 0) {
          var dataArr = arguments[0];
          var dataLen = dataArr.length;
          while (dataLen--) {
            this.addData.call(this, dataArr[dataLen]);
          }
        } else {
          // add to store
          var organisedEntry = this._organiseData(arguments[0], true);
          if (organisedEntry) {
            this._coordinator.emit('renderpartial', {
              min: this._min,
              max: this._max,
              data: [organisedEntry]
            });
          }
        }
        return this;
      },
      setData: function(data) {
        var dataPoints = data.data;
        var pointsLen = dataPoints.length;


        // reset data arrays
        this._data = [];
        this._radi = [];

        for(var i = 0; i < pointsLen; i++) {
          this._organiseData(dataPoints[i], false);
        }
        this._max = data.max;
        this._min = data.min || 0;

        this._onExtremaChange();
        this._coordinator.emit('renderall', this._getInternalData());
        return this;
      },
      removeData: function() {
        // TODO: implement
      },
      setDataMax: function(max) {
        this._max = max;
        this._onExtremaChange();
        this._coordinator.emit('renderall', this._getInternalData());
        return this;
      },
      setDataMin: function(min) {
        this._min = min;
        this._onExtremaChange();
        this._coordinator.emit('renderall', this._getInternalData());
        return this;
      },
      setCoordinator: function(coordinator) {
        this._coordinator = coordinator;
      },
      _getInternalData: function() {
        return {
          max: this._max,
          min: this._min,
          data: this._data,
          radi: this._radi
        };
      },
      getData: function() {
        return this._unOrganizeData();
      }/*,

             TODO: rethink.

             getValueAt: function(point) {
             var value;
             var radius = 100;
             var x = point.x;
             var y = point.y;
             var data = this._data;

             if (data[x] && data[x][y]) {
             return data[x][y];
             } else {
             var values = [];
             // radial search for datapoints based on default radius
             for(var distance = 1; distance < radius; distance++) {
             var neighbors = distance * 2 +1;
             var startX = x - distance;
             var startY = y - distance;

             for(var i = 0; i < neighbors; i++) {
             for (var o = 0; o < neighbors; o++) {
             if ((i == 0 || i == neighbors-1) || (o == 0 || o == neighbors-1)) {
             if (data[startY+i] && data[startY+i][startX+o]) {
             values.push(data[startY+i][startX+o]);
             }
             } else {
             continue;
             }
             }
             }
             }
             if (values.length > 0) {
             return Math.max.apply(Math, values);
             }
             }
             return false;
             }*/
    };


    return Store;
  })();

  var Canvas2dRenderer = (function Canvas2dRendererClosure() {

    var _getColorPalette = function(config) {
      var gradientConfig = config.gradient || config.defaultGradient;
      var paletteCanvas = document.createElement('canvas');
      var paletteCtx = paletteCanvas.getContext('2d');

      paletteCanvas.width = 256;
      paletteCanvas.height = 1;

      var gradient = paletteCtx.createLinearGradient(0, 0, 256, 1);
      for (var key in gradientConfig) {
        gradient.addColorStop(key, gradientConfig[key]);
      }

      paletteCtx.fillStyle = gradient;
      paletteCtx.fillRect(0, 0, 256, 1);

      return paletteCtx.getImageData(0, 0, 256, 1).data;
    };

    var _getPointTemplate = function(radius, blurFactor) {
      var tplCanvas = document.createElement('canvas');
      var tplCtx = tplCanvas.getContext('2d');
      var x = radius;
      var y = radius;
      tplCanvas.width = tplCanvas.height = radius*2;

      if (blurFactor == 1) {
        tplCtx.beginPath();
        tplCtx.arc(x, y, radius, 0, 2 * Math.PI, false);
        tplCtx.fillStyle = 'rgba(0,0,0,1)';
        tplCtx.fill();
      } else {
        var gradient = tplCtx.createRadialGradient(x, y, radius*blurFactor, x, y, radius);
        gradient.addColorStop(0, 'rgba(0,0,0,1)');
        gradient.addColorStop(1, 'rgba(0,0,0,0)');
        tplCtx.fillStyle = gradient;
        tplCtx.fillRect(0, 0, 2*radius, 2*radius);
      }



      return tplCanvas;
    };

    var _prepareData = function(data) {
      var renderData = [];
      var min = data.min;
      var max = data.max;
      var radi = data.radi;
      var data = data.data;

      var xValues = Object.keys(data);
      var xValuesLen = xValues.length;

      while(xValuesLen--) {
        var xValue = xValues[xValuesLen];
        var yValues = Object.keys(data[xValue]);
        var yValuesLen = yValues.length;
        while(yValuesLen--) {
          var yValue = yValues[yValuesLen];
          var value = data[xValue][yValue];
          var radius = radi[xValue][yValue];
          renderData.push({
            x: xValue,
            y: yValue,
            value: value,
            radius: radius
          });
        }
      }

      return {
        min: min,
        max: max,
        data: renderData
      };
    };


    function Canvas2dRenderer(config) {
      var container = config.container;
      var shadowCanvas = this.shadowCanvas = document.createElement('canvas');
      var canvas = this.canvas = config.canvas || document.createElement('canvas');
      var renderBoundaries = this._renderBoundaries = [10000, 10000, 0, 0];

      var computed = getComputedStyle(config.container) || {};

      canvas.className = 'heatmap-canvas';

      this._width = canvas.width = shadowCanvas.width = config.width || +(computed.width.replace(/px/,''));
      this._height = canvas.height = shadowCanvas.height = config.height || +(computed.height.replace(/px/,''));

      this.shadowCtx = shadowCanvas.getContext('2d');
      this.ctx = canvas.getContext('2d');

      // @TODO:
      // conditional wrapper

      canvas.style.cssText = shadowCanvas.style.cssText = 'position:absolute;left:0;top:0;';

      container.style.position = 'relative';
      container.appendChild(canvas);

      this._palette = _getColorPalette(config);
      this._templates = {};

      this._setStyles(config);
    };

    Canvas2dRenderer.prototype = {
      renderPartial: function(data) {
        if (data.data.length > 0) {
          this._drawAlpha(data);
          this._colorize();
        }
      },
      renderAll: function(data) {
        // reset render boundaries
        this._clear();
        if (data.data.length > 0) {
          this._drawAlpha(_prepareData(data));
          this._colorize();
        }
      },
      _updateGradient: function(config) {
        this._palette = _getColorPalette(config);
      },
      updateConfig: function(config) {
        if (config['gradient']) {
          this._updateGradient(config);
        }
        this._setStyles(config);
      },
      setDimensions: function(width, height) {
        this._width = width;
        this._height = height;
        this.canvas.width = this.shadowCanvas.width = width;
        this.canvas.height = this.shadowCanvas.height = height;
      },
      _clear: function() {
        this.shadowCtx.clearRect(0, 0, this._width, this._height);
        this.ctx.clearRect(0, 0, this._width, this._height);
      },
      _setStyles: function(config) {
        this._blur = (config.blur == 0)?0:(config.blur || config.defaultBlur);

        if (config.backgroundColor) {
          this.canvas.style.backgroundColor = config.backgroundColor;
        }

        this._width = this.canvas.width = this.shadowCanvas.width = config.width || this._width;
        this._height = this.canvas.height = this.shadowCanvas.height = config.height || this._height;


        this._opacity = (config.opacity || 0) * 255;
        this._maxOpacity = (config.maxOpacity || config.defaultMaxOpacity) * 255;
        this._minOpacity = (config.minOpacity || config.defaultMinOpacity) * 255;
        this._useGradientOpacity = !!config.useGradientOpacity;
      },
      _drawAlpha: function(data) {
        var min = this._min = data.min;
        var max = this._max = data.max;
        var data = data.data || [];
        var dataLen = data.length;
        // on a point basis?
        var blur = 1 - this._blur;

        while(dataLen--) {

          var point = data[dataLen];

          var x = point.x;
          var y = point.y;
          var radius = point.radius;
          // if value is bigger than max
          // use max as value
          var value = Math.min(point.value, max);
          var rectX = x - radius;
          var rectY = y - radius;
          var shadowCtx = this.shadowCtx;




          var tpl;
          if (!this._templates[radius]) {
            this._templates[radius] = tpl = _getPointTemplate(radius, blur);
          } else {
            tpl = this._templates[radius];
          }
          // value from minimum / value range
          // => [0, 1]
          var templateAlpha = (value-min)/(max-min);
          // this fixes #176: small values are not visible because globalAlpha < .01 cannot be read from imageData
          shadowCtx.globalAlpha = templateAlpha < .01 ? .01 : templateAlpha;

          shadowCtx.drawImage(tpl, rectX, rectY);

          // update renderBoundaries
          if (rectX < this._renderBoundaries[0]) {
            this._renderBoundaries[0] = rectX;
          }
          if (rectY < this._renderBoundaries[1]) {
            this._renderBoundaries[1] = rectY;
          }
          if (rectX + 2*radius > this._renderBoundaries[2]) {
            this._renderBoundaries[2] = rectX + 2*radius;
          }
          if (rectY + 2*radius > this._renderBoundaries[3]) {
            this._renderBoundaries[3] = rectY + 2*radius;
          }

        }
      },
      _colorize: function() {
        var x = this._renderBoundaries[0];
        var y = this._renderBoundaries[1];
        var width = this._renderBoundaries[2] - x;
        var height = this._renderBoundaries[3] - y;
        var maxWidth = this._width;
        var maxHeight = this._height;
        var opacity = this._opacity;
        var maxOpacity = this._maxOpacity;
        var minOpacity = this._minOpacity;
        var useGradientOpacity = this._useGradientOpacity;

        if (x < 0) {
          x = 0;
        }
        if (y < 0) {
          y = 0;
        }
        if (x + width > maxWidth) {
          width = maxWidth - x;
        }
        if (y + height > maxHeight) {
          height = maxHeight - y;
        }

        var img = this.shadowCtx.getImageData(x, y, width, height);
        var imgData = img.data;
        var len = imgData.length;
        var palette = this._palette;


        for (var i = 3; i < len; i+= 4) {
          var alpha = imgData[i];
          var offset = alpha * 4;


          if (!offset) {
            continue;
          }

          var finalAlpha;
          if (opacity > 0) {
            finalAlpha = opacity;
          } else {
            if (alpha < maxOpacity) {
              if (alpha < minOpacity) {
                finalAlpha = minOpacity;
              } else {
                finalAlpha = alpha;
              }
            } else {
              finalAlpha = maxOpacity;
            }
          }

          imgData[i-3] = palette[offset];
          imgData[i-2] = palette[offset + 1];
          imgData[i-1] = palette[offset + 2];
          imgData[i] = useGradientOpacity ? palette[offset + 3] : finalAlpha;

        }

        img.data = imgData;
        this.ctx.putImageData(img, x, y);

        this._renderBoundaries = [1000, 1000, 0, 0];

      },
      getValueAt: function(point) {
        var value;
        var shadowCtx = this.shadowCtx;
        var img = shadowCtx.getImageData(point.x, point.y, 1, 1);
        var data = img.data[3];
        var max = this._max;
        var min = this._min;

        value = (Math.abs(max-min) * (data/255)) >> 0;

        return value;
      },
      getDataURL: function() {
        return this.canvas.toDataURL();
      }
    };


    return Canvas2dRenderer;
  })();


  var Renderer = (function RendererClosure() {

    var rendererFn = false;

    if (HeatmapConfig['defaultRenderer'] === 'canvas2d') {
      rendererFn = Canvas2dRenderer;
    }

    return rendererFn;
  })();


  var Util = {
    merge: function() {
      var merged = {};
      var argsLen = arguments.length;
      for (var i = 0; i < argsLen; i++) {
        var obj = arguments[i]
        for (var key in obj) {
          merged[key] = obj[key];
        }
      }
      return merged;
    }
  };
// Heatmap Constructor
  var Heatmap = (function HeatmapClosure() {

    var Coordinator = (function CoordinatorClosure() {

      function Coordinator() {
        this.cStore = {};
      };

      Coordinator.prototype = {
        on: function(evtName, callback, scope) {
          var cStore = this.cStore;

          if (!cStore[evtName]) {
            cStore[evtName] = [];
          }
          cStore[evtName].push((function(data) {
            return callback.call(scope, data);
          }));
        },
        emit: function(evtName, data) {
          var cStore = this.cStore;
          if (cStore[evtName]) {
            var len = cStore[evtName].length;
            for (var i=0; i<len; i++) {
              var callback = cStore[evtName][i];
              callback(data);
            }
          }
        }
      };

      return Coordinator;
    })();


    var _connect = function(scope) {
      var renderer = scope._renderer;
      var coordinator = scope._coordinator;
      var store = scope._store;

      coordinator.on('renderpartial', renderer.renderPartial, renderer);
      coordinator.on('renderall', renderer.renderAll, renderer);
      coordinator.on('extremachange', function(data) {
        scope._config.onExtremaChange &&
        scope._config.onExtremaChange({
          min: data.min,
          max: data.max,
          gradient: scope._config['gradient'] || scope._config['defaultGradient']
        });
      });
      store.setCoordinator(coordinator);
    };


    function Heatmap() {
      var config = this._config = Util.merge(HeatmapConfig, arguments[0] || {});
      this._coordinator = new Coordinator();
      if (config['plugin']) {
        var pluginToLoad = config['plugin'];
        if (!HeatmapConfig.plugins[pluginToLoad]) {
          throw new Error('Plugin \''+ pluginToLoad + '\' not found. Maybe it was not registered.');
        } else {
          var plugin = HeatmapConfig.plugins[pluginToLoad];
          // set plugin renderer and store
          this._renderer = new plugin.renderer(config);
          this._store = new plugin.store(config);
        }
      } else {
        this._renderer = new Renderer(config);
        this._store = new Store(config);
      }
      _connect(this);
    };

    // @TODO:
    // add API documentation
    Heatmap.prototype = {
      addData: function() {
        this._store.addData.apply(this._store, arguments);
        return this;
      },
      removeData: function() {
        this._store.removeData && this._store.removeData.apply(this._store, arguments);
        return this;
      },
      setData: function() {
        this._store.setData.apply(this._store, arguments);
        return this;
      },
      setDataMax: function() {
        this._store.setDataMax.apply(this._store, arguments);
        return this;
      },
      setDataMin: function() {
        this._store.setDataMin.apply(this._store, arguments);
        return this;
      },
      configure: function(config) {
        this._config = Util.merge(this._config, config);
        this._renderer.updateConfig(this._config);
        this._coordinator.emit('renderall', this._store._getInternalData());
        return this;
      },
      repaint: function() {
        this._coordinator.emit('renderall', this._store._getInternalData());
        return this;
      },
      getData: function() {
        return this._store.getData();
      },
      getDataURL: function() {
        return this._renderer.getDataURL();
      },
      getValueAt: function(point) {

        if (this._store.getValueAt) {
          return this._store.getValueAt(point);
        } else  if (this._renderer.getValueAt) {
          return this._renderer.getValueAt(point);
        } else {
          return null;
        }
      }
    };

    return Heatmap;

  })();


// core
  var heatmapFactory = {
    create: function(config) {
      return new Heatmap(config);
    },
    register: function(pluginKey, plugin) {
      HeatmapConfig.plugins[pluginKey] = plugin;
    }
  };

  return heatmapFactory;


});
